CVE-2026-0977
Published: 16 March 2026
Summary
CVE-2026-0977 is a medium-severity Improper Access Control (CWE-284) vulnerability in Ibm Cics Transaction Gateway. Its CVSS base score is 5.1 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Data from Local System (T1005); ranked at the 1.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
Threat & Defense at a Glance
Threat & Defense Details
Likely Mitigating ControlsAI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
The access control policy and procedures directly mandate and enforce proper access control mechanisms across the organization.
Device lock enforces restricted access until re-authentication, directly reducing unauthorized use of active sessions.
Supervision and review of access control activities directly detects and remediates improper access configurations or usages.
Explicitly identifying and documenting actions permitted without identification or authentication enforces proper access control boundaries by defining justified exceptions.
By automatically labeling outputs with security attributes, the control supports attribute-based enforcement and reduces exploitability of improper access control weaknesses.
Associating and retaining security attributes with data directly supports enforcement of access control decisions across storage, processing, and transmission.
Requiring prior authorization for each remote access type prevents improper access control over remote connections.
Requiring authorization of wireless access before allowing connections enforces proper access control for this access method.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Improper access controls enable unauthorized local file viewing/transfer, directly facilitating data collection from the local system (T1005).
NVD Description
IBM CICS Transaction Gateway for Multiplatforms 9.3 and 10.1 could allow a user to transfer or view files due to improper access controls.
Deeper analysisAI
CVE-2026-0977 affects IBM CICS Transaction Gateway for Multiplatforms versions 9.3 and 10.1 due to improper access controls (CWE-284). Published on 2026-03-16, the vulnerability enables a user to transfer or view files, earning a CVSS v3.1 base score of 5.1 (AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N).
A local attacker requires no privileges (PR:N) and can exploit the issue with low attack complexity and no user interaction. Successful exploitation allows limited access to transfer or view files, yielding low confidentiality and integrity impacts but no availability disruption.
IBM provides details on the vulnerability, including mitigation guidance, in their security advisory at https://www.ibm.com/support/pages/node/7263518.
Details
- CWE(s)